AT&T MERLIN LEGEND Release 3.1, System Programming Manual

Page: 871 / 887

Glossary
GL–24
System Programming
synchronous data
transmission Method of transmitting a continuous digital data stream in
which the transmission of each binary
bit is synchronized
with a master clock. See also asynchronous data
transmission .
system acceptance
test Test of all trunks, telephones, data terminals, and features
after installation to ensure that they are working correctly.
System Access
buttons See SA buttons .
system date and
time Date and time that appear on MLX display telephones and
SMDR reports.
system
programming Programming of system functions and features that affect
most users, performed from an MLX-20L telephone or a
computer using
SPM . See also extension programming
and centralized telephone programming.
System
Programming and
Maintenance See SPM .
system
renumbering Procedure used to change the numbers assigned to
telephones, adjuncts,
calling group s, paging groups, park
zones. Remote Access , and lines/trunks.
T
T1
Type of digital transmission facility that in North America
transmits at the
DS1
rate of 1.544 Mbps.
TDM
(time division multiplex) Process where the transmission
channel is divided.
telephone power
supply unit
Equipment that provides power to an individual telephone.
tie trunk
Private trunk directly connecting two telephone switches.
See also
automatic-start tie trunk
,
delay-dial-start tie trunk
,
immediate-start tie trunk
, and
wink-start tie trunk.
timed flash
See
switchhook flash
.
tip/ring
Contacts and associated conductors of a
single-line
telephone
plug or jack.
touch-tone receiver
See
TTR
.
T/R
See
tip/ring
.